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noun
A wide channel containing blood; does not have the coating of an ordinary blood vessel.
synonym: sinus.
is a specific kind of: canal, channel, duct, epithelial duct.
is a broader term that covers: cavernous sinus, sinus cavernosus | coronary sinus, sinus coronarius | sigmoid sinus, sinus sigmoideus | sinus rectus, straight sinus, tentorial sinus | sinus transversus, transverse sinus.
Find more on venous sinus elsewhere: etymology - rhymes - Wikipedia.
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